Pigment Red 122

Pigment Red 122 (CI 73915) is a chemical compound, a synthetic indigoid dye (a special kind of blue dye that can be extracted naturally from plants or obtained synthetically, by chemical reaction as in this case, and which is the oldest form of colouring). Chemical Name 5,12-Dihydro-2,9-dimethylquino[2,3-b]acridine-7,14-dione...